U.S. patent number 4,225,369 [Application Number 05/858,542] was granted by the patent office on 1980-09-30 for method of securing sheets or poster to a base.
Invention is credited to Hermann Felchlin.
United States Patent |
4,225,369 |
Felchlin |
September 30, 1980 |
Method of securing sheets or poster to a base
Abstract
The present invention refers to a method of securing a sheet or
a poster to a base, wherein the sheet or poster is brought into
contact with at least one plastics material sheet and caused to
adhere to said base by dampening said base or by wiping said base
on the poster side with a means suitable for producing an
electrostatic charge. In one particular application two plastics
material sheets joined together along one edge and folded along
said edge so as to be superposed one on the other are utilized,
said sheet or poster being placed between or on said superposed
sheets, said superposed sheets being caused to adhere to one
another by being wiped with means suitable for producing an
electrostatic charge.
Inventors: |
Felchlin; Hermann (5200
Brugg-Windisch, CH) |
Family
ID: |
4408740 |
Appl.
No.: |
05/858,542 |
Filed: |
December 8, 1977 |
Foreign Application Priority Data
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|
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Dec 8, 1976 [CH] |
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15394/76 |
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Current U.S.
Class: |
156/71; 156/290;
156/306.3; 156/306.6; 29/428; 29/458; 361/225; 361/231; 40/594;
40/615; 40/617; 428/14; 428/187; 428/203; 428/211.1; 428/904.4 |
Current CPC
Class: |
B29C
63/0043 (20130101); H05F 1/00 (20130101); Y10T
428/24736 (20150115); Y10T 428/24868 (20150115); Y10T
29/49885 (20150115); Y10T 428/24934 (20150115); Y10T
29/49826 (20150115) |
Current International
Class: |
B29C
63/00 (20060101); H05F 1/00 (20060101); B32B
031/04 (); B32B 031/20 () |
Field of
Search: |
;156/272,380,290,300,60,309,71 ;428/13,14,68,922 ;310/309,310
;307/149 ;40/5,156,158R,158B,372,600,618,594,595,159,611,615 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wityshyn; Michael G.
Attorney, Agent or Firm: Wender, Murase & White
Claims
I claim:
1. A method of securing a poster to a wall so it is ready for
display and secured in a manner so as to permit removal of the
poster from the wall without causing damage to either the poster or
the wall, comprising the steps of:
providing a transparent plastics material sheet;
bringing the poster into physical contact with said transparent
plastics material sheet and affixing the poster thereto; and
adhering said transparent plastics material sheet to the wall
without application of heat by wiping the wall with a means
suitable for producing an electrostatic charge, and then pressing
said plastics material sheet against the wall, the poster affixed
to said plastics material sheet being thus ready for display on the
wall, the poster thereby being secured in a manner so as to permit
removal of the poster from the wall without causing damage to
either the poster or the wall.
2. A method as claimed in claim 1, wherein two transparent plastics
material sheets joined together along one edge and folded along
said edge so as to be superposed one on the other are utilized,
said poster being slidably placed between said superposed sheets,
said superposed sheets being caused to firmly adhere to one another
by being wiped with said means suitable for producing an
electrostatic charge.
3. A method as claimed in claim 1, in which said means for
producing the electrostatic charge is made of the same material as
said transparent plastics material sheet and is in the form of a
pocket, bag or glove.
4. A method as claimed in claim 1, in which said transparent
plastics material sheet is fused to the poster.
5. A method as claimed in claim 5, in which said transparent
plastics material sheet is fused to said poster in discrete areas
or at discrete points.
6. A method as claimed in claim 1, in which said transparent
plastics material sheet is made of polyvinyl chloride.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a method of securing pictures or
posters to a base. Hitherto, pictures or posters have generally
been secured to a base, such as a wall, by utilising drawing-pins,
adhesives or adhesive tape. However, this often leads to damage of
the picture or of the wall. The picture, especially if it is a
large poster or placard, cannot always be replaced and damage to
the wall or wall covering may be expensive to correct.
The present invention seeks to provide a method by means of which
pictures or posters may be easily secured to a wall or base wall
without risking damage to either the picture or poster or to the
base. It is a subsidiary object of the invention to provide a
method which permits the picture or poster to be replaced in a
simple manner.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a method of
securing a sheet or a poster to a base wherein the sheet or poster
is brought into contact with at least one plastics material sheet
and caused to adhere to said base by dampening said base or by
wiping said base on the poster side with means suitable for
producing an electrostatic charge.
In one embodiment of the present invention two plastics material
sheets joined together along one edge and folded along said edge so
as to be superposed one on the other are utilised, said sheet or
poster being placed between or on said superposed sheets, said
superposed sheets being caused to adhere to one another by being
wiped with means suitable for producing an electrostatic
charge.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective front view of one embodiment of a poster
secured to a base in accordance with the present invention; FIG. 2
is a side view of the embodiment shown in FIG. 1;
FIG. 3 is a perspective front view of an alternative embodiment of
a poster secured to a base according to the present invention;
and
FIG. 4 is a sectional side view of the alternative embodiment shown
in FIG. 3.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In order to permit the picture 18 which may be a catalogue page, an
advertising prospectus or a placard to be adhered to a wall, a
plastics material backing sheet 20, preferably made of polyvinyl
chloride (PVC) is secured to the reverse side thereof. The
thickness of the PVC sheet depends upon the size of the sheet to be
secured, the larger the sheet or poster, the thicker the sheet of
PVC. The PVC sheet may be either adhered to or fused to the sheet
to be secured. If an adhesive is used, it is preferable to use a
so-called contact adhesive which is usually Neoprene-based. The
whole surface may be coated with adhesive or, if desired, the
adhesive may be provided in discrete areas. Fusing is expediently
effected at the edges of the sheets, or in the form of a
diamond-shaped lattice or at discrete spots. The fusion may,
however, be effected at points which form a pattern such as
letters, numerals or a drawing. This is particularly desirable if
the fused or welded side is, in use, visible. This may occur if,
for example, the picture or poster is to be displayed in a
window.
Sheets coated in this manner may be permanently secured by wetting
the base 22 to which the picture is to be applied. It then suffices
for the sheet to be pressed against the base and smoothed over.
Particularly suitable bases for such treatment are smooth surfaces
such as varnished wood, plastics material coatings, painted iron
surfaces, glass and fine-grained wall papers. If, however, the base
has a rough texture, only temporary adhesion may be attained in
this manner.
It is, however, also possible to cause coated sheets to adhere to a
smooth base without the need for wetting if the sheets are pressed
against the base and then are rubbed with a rag or the like to
produce an electrostatic charge. It has thus been found that the
electrostatic charging of the PVC sheet may best be carried out
with the same material, whereby not the PVC sheet directly but the
sheet having to be rubbed. It is thus expedient if the sheet
utilised for the rubbing is in the shape of a pocket or bag or is
in the shape of a glove. Thin, discardable PVC gloves which are
readily obtainable are not suitable, but such may be welded or
fused to a thicker PVC sheet.
It must, however, be stressed that the adhesion is produced not
only by electrostatic forces, but also by the close contacting of
the sheet or of the PVC sheet with the base. In contrast to the
"damp adhesion", the "dry adhesion" has the advantage that the
sheet can be moved around on the base but will still adhere
thereto. It is, therefore apparent that dry adhesion is preferred
wherever damp adhesion is either not possible or undesirable, for
example, if the base is a wallpaper or delicate wood. It will also
be apparent that sheets secured in this manner can be readily
removed and that no traces of adhesion will remain on the base.
There may be various reasons why an alternative adhesion method is
desired. Thus, the base may be unsuitable for utilising such a
method, for example, it may be too rough or uneven. Moreover, it
may not always be desirable to cover a relatively large poster with
a PVC sheet, particularly if the posters or pictures being
displayed are frequently interchanged or replaced. In such a case,
two PVC sheets 10 and 12 approximately the size of the poster are
connected together along one edge 14. These two sheets are secured
with the top 16 of the connected edge facing upwards to the wall.
The two sheets may, if required, or desired, be permanently secured
together by utilising an adhesive cement. To mount the poster, it
is merely necessary to slide the poster 18 between the two sheets
and to wipe it with the PVC pocket or bag or glove, which causes
the poster to firmly adhere between these sheets. This method of
securing has the advantage that it is unnecessary to use a wall or
the like as the base since a double-sheet arrangement may also be
suspended freely by hanging means 26 from, for example, a ceiling.
With such an arrangement, several variations are possible. For
example, one or both sheets may be tinted or toned or may have a
frame 28 or any other decoration mounted thereon. If, however, it
is not desired to entirely cover the poster, it is still possible
to cause it to adhere between the two sheets.
It is not essential to use a PVC sheet as the adhesive sheet, since
all plastics material sheets, which may be of any suitable
thickness and which may be electrostatically charged are
suitable.
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